Rau Cliffrunner is a level 30 quest giver located at Freewind Post in the contested territory of Thousand Needles.
Rau Cliffrunner, Overseer of Freewind Post, leads the Cliffrunner tribe of tauren.[1] (LoM 60)
He starts the quest 
[25] The Sacred Flame.
See List of Thousand Needles NPCs.